Echinoderms
Sea urchins and sea cucumbers
Read the following posts for more information about these very useful customers:
Sea cucumbers
Some of the species names here are educated guesses made by echinoderm researchers.
A stubborn sea cucumber in defence mode will sometimes release sticky toxic threads, which are, in fact, intestines. These will then grow back. This sea cucmber is being handled by an Echinoderm researcher.
Sea urchins
